Rotary engine.



l Patented 1an. 2|, |902.

c. cnooK, .j n. ROTARY ENGINE.

(Application led Oct. 16, 1900.)

4 Sheets-Sheet I.

(No Modell) wHNEssEs': i r IWENTUR l ngi-52% Patented 1an. 2|, |902.

c. (5300K, n. ROTARY ENGINE.

I (Applicatiog led Ont. 16, 1900.)

(No Model.)

Y INVENTOR WITNESSES':

/a ATTORNEY` No. 69|,`6o4. Patented 1an.' 2|, |902.

c cnooK, 1n

RDTARY ENGINE.

Applicafzi/oh led pct. 16, 1900.)

4 Sheets-Shee-t 3.

(Ilo Model.)

WITNESSES.

Nu. 69|,604. Patented lan. 2|, |902;

C 0300K In RoTAnY ENGINE.

(Apk t filedO 16 1900) 4 sheets-snm 4.

(No Modal.)

/f ATTORNEY NITED STATES PATENT OFFICE.

CHARLES CROOK, JR., OF BROOKLYN, NEW YORK, ASSIGNOR TO LUTHER S. BUSH,OF NEW YORK, N. Y.

ROTARY ENGINE.

SPECIFICATION farmingparf af Letters Patent No. 691,604, daten January21, 1902.

Application filed October 16, 1900. Serial No. 33,197. (No model.)

T @ZZ whom t may concern/.-

Be it known that I, CHARLES CEook, Jr., a citizen of the United States,and a resident of the city of New York, borough of Brooklyn,

in the county of Kings and State of New York,

have invented certainl new and useful lmprovements in Rotary Engines, ofwhich the following is a specification. l

This invention relates to improvements in 1o rotary engines; and theobject of my invention is to provide a new and improved engine of thiskind which is simple in construction,

strong, durable, and effective, very economical, andthe parts of whichcan readily be disengaged and separated for inspection, repair, oradjustment and can be reassembled and united with great facility.

In the accompanying drawings, in which like letters of referenceindicate like parts in zo all the views, Figure l is a side view of myimprovedrotary engine, parts being omitted. Fig. 2 is a front elevation,parts beingin section and others omitted, thelcylinder-'shells andpiston being separated for inspection or repair. Fig. 3 is an elevationof the side shown in Fig. l, but in conjunction with other' parts whichhave been omittedin Fig. l, parts of Fig. 3 being in section. Fighec isan elevation of parts shown in Fig. 3. is avertical central longitudinalsection through the engine, parts being omitted. Fig. Gis an elevationofthe other side of the engine, parts being in section and others brokenaway. Figs. 7 and 8 are edge views of the cylinder-shells. "5 Figs. 9,l0, ll, and l2 are vertical longitudinal sectional views of aslightly-modified form of my improved engine provided with areversing-gear, parts being omitted in some iiguros.

The engine rests upon a hollow cast base A, in which the exhaust channelo1' duct A' is formed. The cylinder B, which is ringshaped, is formed intwo shells B and B2, mounted vertically on the base A and havingabutting iianges B3, through which the bolts or screws B2* are passedfor holding the shells together. Each cylinder shell B' B2 has sidellugs C resting upon supporting ledges A2 on the base A, of which ledgesthere is one on each side of the base. Bolts or screws C', passedthrough the sidelugs C and the ledges A2, serve to hold thecylinder-shells in place, and as these shells by meansof their lugs Crest on the plates A2the two shells Blv B2 can easily be moved toward orfrom each 55v other after thebolts or screws Bl and C have been loosenedor removed, the lugs C sliding on the ledges A2, and can thus be movedvery easily. Each shell B' B2 is provided dwith a steam-space B5, intowhich steam at high pres- 6o sure is admitted through the pipes B6 forthe purpose of completely jacketing the cylinder. The main shaft D ismounted in a suitable bearing on a standard D on the base A.

The piston E, fitting in the ring-shaped cylinder B, is secured on thedisk E', filling inv the shells B B2 and secured on the shaft D. Thepiston has an outer packing-strip E2 and an inner packing-ring E6, whichare both pressed radially against the cylinder-walls by 7o springs E3. Acylindrical abutment- F, having a suitable recess F' for the'passage ofthe piston E, is mounted in the cylinder and a substantiallysemicylindrical transverse recess F2 in/the outer cylinder-walls in sucha 75 manner that it can turn axially parallel with the shaft D. When inthe position shown in Fig. 5, it permits the piston to pass freely; butwhen in the position shown in Figs. l0, l1, and l2 it closes thecylinder and acts as an 8o abutment for the live steam, as it is of suchdimensions and so mounted as tocomein contact with the cylinder-Walls.It has two longitudinal packing-strips a and b, which are so located asto be 'in contact with the walls 85 of the recess F2 when the abutmentis in position for permitting the piston to pass, as shown in full linesin Fig. 5, and when the abutment isswung up to extend across thecylinder the packing-strip a is in contact with the inner 9ocylinder-wall and the strip b is in contact'with the walls of the recessF2, as shown in dotted lines in Fig. 5.

A pinion G is secured on a neck on one end f of the abutment F outsideofthe shell and is 9 3 engaged by a segment-rack G', formed on the lowerend of an arm G2, mounted t0 rock on the main shaft D, and this arm isconnected near its lower end by a pivoted link G2 with a lever G4,pivoted at G9 to the outside of the roo cylinder and carrying on a studonits side an antifriction-roller G5, which runs in a camgroove G6,formed on one face ot' a cam-disk G, secured on the main shaft, whichcam-i shifted or adjusted by means of a screw or other suitable device.From the flat face K groove has the offset G3 tor properly throwanexhaust-duct M extends to the outer cyl- 7o ing the lever Gl. inder-Wallat a point near the rocking abut- 5 The steam-inlet valve il is mountedto rock ment. An exhaust-duct Nextends from said in a transversecylindrical recess il' in the i tiat tace K' to the recess F and anotherduct shell, and from said recess the steam-inlet f O from said tlat faceto the exhaust-duct P. channel H2 extends to the cylinder. 0n one l Achannel R extends from the flat face K to 75 end of the rock-valve H acrank-arm H3 is l the recess. The valve L has the usual reto fixedoutside of the shell and is connected by i cess t2 and a wing or lip S,having an opena link Hl with the free end of a lever H5, pivi ing T.oted to the shell at H6 and carrying a roller i When the engine is torun in the direction U7, which is pressed by a spring HS against i ot'the arrowao, Figs. 9, l0, and l1, the valve L 8o a cam-disk H9, iixed onthe main shaft D and is so shifted as to close the channel or duct Mhaving a cam projection Hw of such shape i by means ot' the wing or lipS on said valve and size as may be necessary according to the and toestablish communication between the length of time steam is to beadmitted into i steam-chest L and the channel or duct N by the cylinder.The engine can thus readily means ot' the opening T in said wing S, as85 be adjusted to cut otf the steam at any dei shown in Figs. 9, l0, and1l.. At the same zo sired part of the stroke. The exhaust-steam i timethe channel or duct R only is connected duet I, which is on that side ofthe abutment i by the recess Q oi' the valve L' with the exopposite theone at which the steam-inlet is l hanst duct or channel O. located,leads to the exhaust-channelAin the When the parts are in the positionshown 9o base A. Just before steam is admitted into i in Fig. 9, nosteam can enter; but as soon as z5 the cylinder the abutment F isbrought by its t the piston has passed the abutment F the latcam intothe position shown in dotted lines i, ter is brought into the positionshown in Fig. in Fig. 5, the piston being at the right of the l l0, oneend of the curved duct J in said abutsteaminlet. The entering andexpanding i ment being in communication with the inner 95 steam which iscut off at the desired point i end ot' the duct N and the other withthat 3o forces the piston around in the direction of i part of thecylinder between the piston Eand the arrow .12', the exhaust-steam ot'the preabutment F. The opposite end of the cylinvious stroke beingforced out through the eX- i der is brought into communication with thehaust-duct I. `When the piston E arrives at exhaust-channel O by therecess Q of the xco the abutment, the same is turned tor an ini valveL', the duct R and the recess F in the 55 stant into the position shownin iull lines, abutmentpermittingthe exhaust-steam from Fig. 5, to letthe piston pass and is then imthe previous stroke to be forced out ofthe mediately returned to the position shown in cylinder by theadvancing piston, which is dotted lines in Fig. 5, and so on. moved inthe direction of the arrow x2 by the 105 X/Vhen the engine needsinspection, adjuststeam entering the cylinder through the 4o ment, orrepair, the bolts or screws C' and B4 curved duct J in the abutment F.In case it are removed and the shell B' is moved from i is desired tocut off the steam-say about onethe section B2, as shown in Fig. :2, thesteaml quarter ot' the stroke, more or less-the abutvalve and itsoperating-gear moving with the l ment is moved back sufciently tointerrupt 11o shell B2. l the communication between the duct N and Theabutment and its operating-gear rel the curved duct J in the abutment,as shown main in the shell B, which remains fixed on l in Fig. l1, butwithout closing the duct R by the base. i the abutment. By the time thestroke is iin- For the purpose of removing the piston and l ished theabutment is moved into the posi- 115 its disk from the Xed shell themain shaft is l lion shown in Fig. 9, the steam-supplyduct N 5o movedlengthwise, the collars, rbc., on the l is closed by the abutment, andwhen the pissame having been first loosened. l ton has passed theabutment the latter is The parts can readily be reassembled by i broughtinto the position shown in Fig. 10 moving the shaft back lengthwise andshiftagain, and so on. 12o ing the shell B2 up against the shell B and lThe cam for operating the abutment must then locking the parts in place.i, of course be so shaped as to turn back the In the construction shownin Figs. 9 to 12 l abutment into the position shown in Fig. 11 provisionis made for reversing the engine, i at the time the steam is to be cut0E. and for this purpose the steam is not ad- When the direction ofrotation is to be re- 125 mitted direct, asdescribed above, butthrough lversed, the valve L is shifted into the posi- 6o the abutment which isprovided with a subtion shown in Fig. 12, so that communicationstantially U-shaped or segmental steam-duct l is established by the ductM and valve L be- J, the ends of which can register with steami tweenone end of the cylinder B and the eX- ducts in the parts of the shells.The shells i haust-duct P, the live steam entering the op- 13o areprovided with the solid portion K, having l posite end ot' the cylinderthrough the duct a flat face K, on which the slide-valve L is l R andthe recess F in the abutment as long mounted, with asteam-chest L,having a suitl as the abutment is in the position shown in ablesteam-inlet L2. The valve L' may be l Fig. l2.

When the solid part of the abutment is swung into the recess, it closesthe steam-inlet duct R, but opens it as soon as the abutment is broughtin=to the position shown in Fig. l2.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. In a rotary engine, the combination with a base, having ledges, ofcylinder-shells having lugs projecting beyond the peripheries of theshells and resting on said ledges, said ledges being entirely outside ofthe outer periphery of the shells, substantially as herein shown anddescribed. l

2. In a rotary engine, the combination with a base having ledges, ofcylinder-shells resting vertically on said ledges and movable laterallytoward and from each other on said ledges, lugs on said shells whichlugs extend beyond the periphery of the shells and rest upon saidledges, a piston between the shells, a main shaft on whichl the pistonis secured and a standard on said baseonwhich standard the main shaft ismounted, substantially as herein shown and described.

3. In a rotary engine, the combination with a cylinder and a rotarypiston-therein, of a recessed cylindrical abutment, mounted to rotateaxially in the cylinder and in the outer cylinder-wall, a pinion on oneend of said y abutment, a segment-rack engaging said pinion and mountedto swing on the engine main shaft, a cam on the main shaft, a pivoted1ever engaged by said cam and a link connecting the swingingsegment-rack with said pivoted lever, substantially as herein shown anddescribed.

4. In arotary engine, the combination with a cylinder and a rotarypiston therein, of a main shaft carrying the piston, arecessedcylindrical abutment mounted parallel with the main shaft in thecylinder and a recess in the outer wall of the cylinder, means forturning said abutment axially to Yand fro from the main shaft and twolongitudinal packingstrips in said abutment and separated a distanceless than the length of the arc of the recess in the outer wall, inwhich the abutment rotates, substantially as herein shown and described.

5. In a rotary engine the combination with a cylinder anda rotary pistontherein, of a recessed cylindrical abutment, mounted to rotate axially'parallel with the axis of the rotary piston in the cylinder and arecess in the outer cylinder-wall said abutment having a steam-duct theends of 'which are in the periphery of the abutment, and which canregister with steam-ducts in the cylinder-wall and an adjustable valveon the cylinder-wall for controlling the steam-ducts in thecylinder-wall and extending over an exhaust-port between saidsteam-ports, substantially as herein shown and described.

6. In a rotary engine the combination with a cylinder and a rotarypiston therein, of a steam-chest on said cylinder, an adjustable valvein said chest, a duct extending from the steam-chest to anexhaust-channel in thecyl- /inder-wall, a recessed cylindrical abutmentmounted to rotate parallel with the pistonaxis in a recessin the outercylinder-wall andA in the cylinder,said abutment having a steamduct, theends of which are in the periphery of the abutment, steam-ductsextending from the recess in which the abutment rotates to thesteam-chest, such ducts as well as theexhaust-duct located between thesteam-ducts being controlled by the valve in the steamchest,substantially as herein shown and de-V scribed.

g 7. In a rotary engine the combination with a-cylinder anda rotarypiston therein, of y a steam-chest on said cylinder, an adjustable valvein said chest, a duct extending from the steam-chest to anexhaust-channel in the cylinder-wall, a recessed cylindrical abutmentmounted to rotate parallel with the pistonaxis in a recess i n the outercylinder-wall and in the cylinder, said abutmenthaving a steamduct, theends of which are in the periphery of the abutment, steam-ductsextending from the recess in which the abutment rotates to thesteam-chest and a duct extending from as well as the exhaust-duct beingcontrolled by the valve in the steam-chest, substantiall y as hereinshown and described. g Signed at New York city, in the county of NewYork and State of New York, this 21st day of July, A. D. 1900. g

' CHARLES CROOK, JR. Witnesses:

WILLIAM E. GowDEY, EDWARD BAL'rzLEY.

the steam-chest tothe cylinder, such ducts l l

